Need with 9 and 12(theirs a picture)

Number 6 is incorrect. Remember when you see -(-1) that is addition because you are subtracting a negative from a negative so you take the negative sign away and you have a positive. The correct answer to 6 is -75. For number 9 the first thing that you are gonna do is distribute that negative sign to the -12 in parentheses. This will make it a positive 12 which leaves you with

-8+12-31=-27

Next for number 12 you will distribute the - sign onto the -9 in parentheses and the -16 in parentheses. This will leave you with -16+9+16=9

Hope that this helped!

Hello there,

1. The standard form of a straight line with a slope and a y-intercept is as follows:

, where is the slope and is the y-intercept.

In this case, we have a slope of and a y-intercept of 3. Plugging in for and 3 for gives us:

2. We are given two points. With these two points, we can find the slope with the formula for the slope to be:

We can use the points and the corresponding values to solve for the slope:

We can plug into our equation:

To find b, we simply plug in one of our points into this equation, and solve. I will use (2, 1) since both values are positive, but feel free to use (-1, -3) if you'd like:

Now plug into the equation.

Hope this helps! :^)